The vendors can use the Magento 2 Manage Attribute feature to edit the attribute.

To edit the attribute

1. Go to the Vendor Panel.
2. On the left navigation bar, click the Product Attributes menu.
   The menu appears as shown in the following figure:
   
3. Click Manage Attribute.
   The Vendor Product Attribute page appears as shown in the following figure:
   
   All the created vendor product attributes are listed on the page.
4. Scroll down to the required attribute to edit.
5. Click the respective row.
   The editing page of the specific attribute appears as shown in the following figure:
   
6. Make the changes as per the requirement.
7. Click the Save Attriute button.
   The product attribute is saved and a success message appears on the page.